<template>
  <div>
    <el-button type="primary" icon="el-icon-plus" style="margin: 10px 0" @click="showDialog">添加</el-button>

    <el-table style="width: 100%" border :data="list">
      <el-table-column type="index" label="序号" width="80px" align="center"> </el-table-column>
      <el-table-column prop="tmName" label="品牌名称" width="width"> </el-table-column>
      <el-table-column prop="logoUrl" label="品牌LOGO" width="width">
        <template slot-scope="{row}">
          <img :src="row.logoUrl" style="width: 150px; height: 100px">
        </template>
      </el-table-column>
      <el-table-column prop="prop" label="操作" width="width">
        <template slot-scope="{row, $index}">
          <el-button type="warning" icon="el-icon-edit" size="mini" @click="updateTradeMark(row)">修改</el-button>
          <el-button type="danger" icon="el-icon-delete" size="mini" @click="deleteTradeMark(row)">删除</el-button>
        </template>
      </el-table-column>
    </el-table>

    <el-pagination
      @current-change="getPageList"
      @size-change="hanldeSizeChange"
      :current-page="page"
      :total="total"
      :page-size="limit"
      :pager-count="7"
      :page-sizes="[3, 5, 7]"
      layout="prev, pager, next, jumper, ->, total, sizes"
      style="text-align: center"
    >
    </el-pagination>

    <el-dialog :title="tmForm.id?'修改品牌':'添加品牌'" :visible.sync="dialogFormVisible">
      <el-form :model="tmForm" :rules="rules" ref="ruleForm">
        <el-form-item label="品牌名称" label-width="100px" prop="tmName">
          <el-input v-model="tmForm.tmName" autocomplete="off" style="width: 80%"></el-input>
        </el-form-item>

        <el-form-item label="品牌LOGO" label-width="100px" prop="logoUrl">
          <el-upload
            class="avatar-uploader"
            action="/dev-api/admin/product/fileUpload"
            :show-file-list="false"
            :on-success="handleAvatarSuccess"
            :before-upload="beforeAvatarUpload">
            <img v-if="tmForm.logoUrl" :src="tmForm.logoUrl" class="avatar">
            <i v-else class="el-icon-plus avatar-uploader-icon"></i>
            <div slot="tip" class="el-upload__tip">只能上传jpg/png文件，且不超过500kb</div>
          </el-upload>
        </el-form-item>

      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button @click="dialogFormVisible = false">取 消</el-button>
        <el-button type="primary" @click="addOrUpdateTradeMark">确 定</el-button>
      </div>
    </el-dialog>
  </div>
</template>

<script>
import cloneDeep from 'lodash/cloneDeep'
export default {
  name: 'TradeMark',
  data() {
    var validateTmName = (rule, value, callback) => {
    if(value.trim().length<2 || value.trim().length>10) {
      return callback(new Error('品牌名称需2-10位'))
    } else {
      callback()
    }
    }
    return {
      page: 1,
      limit: 3,
      list: [],
      total: 0,
      dialogFormVisible: false,
      tmForm: {
        tmName: '',
        logoUrl: ''
      },
      rules: {
        tmName: [
          { required: true, message: '请输入品牌名称', trigger: 'blur' },
          { validator: validateTmName, trigger: 'change' }
        ],
        logoUrl: [
          { required: true, message: '请选择品牌图片'}
        ],
      }
    }
  },
  mounted() {
    this.getPageList()
  },
  methods: {
    // 获取品牌列表数据
   async getPageList(pager = 1) {
      this.page = pager
      const {page, limit} = this
      let result = await this.$API.trademark.reqTradeMarkList(page, limit)
      if(result.code == 200) {
        this.list = result.data.records
        this.total = result.data.total
      }
    },
    // 分页器中每页显示数据条数改变时的回调
    hanldeSizeChange(limit) {
      this.limit = limit
      this.getPageList()
    },
    // 显示添加品牌的对话框
    showDialog() {
      this.dialogFormVisible = true
      this.tmForm = {tmName: '', logoUrl: ''}
    },
    // 修改品牌
    updateTradeMark(row) {
      this.dialogFormVisible = true
      // 深拷贝
      this.tmForm = cloneDeep(row)
    },
    // 图片成功选中时的回调
    handleAvatarSuccess(res, file) {
      this.tmForm.logoUrl = res.data
    },
    // 图片选中前的对图片格式和图片大小验证
    beforeAvatarUpload(file) {
      const isJPG = file.type === 'image/jpeg';
      const isLt2M = file.size / 1024 / 1024 < 2;

      if (!isJPG) {
        this.$message.error('上传头像图片只能是 JPG 格式!');
      }
      if (!isLt2M) {
        this.$message.error('上传头像图片大小不能超过 2MB!');
      }
      return isJPG && isLt2M;
    },
    // 确认按钮的回调
    addOrUpdateTradeMark() {
      this.$refs.ruleForm.validate(async (success) => {
        if(success) {
          this.dialogFormVisible = false
          let result = await this.$API.trademark.reqAddOrUpdateTradMark(this.tmForm)
          if(result.code == 200) {
            this.$message({
              type: 'success',
              message: this.tmForm.id?'修改品牌成功':'添加品牌成功'
            })
          }
          this.getPageList(this.tmForm.id?this.page:1)
        } else {
          return false
        }
      })
    },
    // 删除品牌数据
    deleteTradeMark(row) {
      this.$confirm(`确定删除${row.tmName}?`, '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).then(async () => {
        let result = await this.$API.trademark.reqDeleteTradeMark(row.id)
        if(result.code == 200) {
         this.$message({
           type: 'success',
           message: '删除成功!'
         }); 
        }
        this.getPageList(this.list.length>1?this.page:this.page-1)
      }).catch(() => {
        this.$message({
          type: 'info',
          message: '已取消删除'
        });          
      });
    }
  }
}
</script>

<style>
.avatar-uploader .el-upload {
  border: 1px dashed #d9d9d9;
  border-radius: 6px;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}
.avatar-uploader .el-upload:hover {
  border-color: #409EFF;
}
.avatar-uploader-icon {
  font-size: 28px;
  color: #8c939d;
  width: 178px;
  height: 178px;
  line-height: 178px;
  text-align: center;
}
.avatar {
  width: 178px;
  height: 178px;
  display: block;
}
</style>
